1) You don't have to come back the day after tomorrow.
你后天不必回来了
2) You don't have to go now.
你不必去了。
3) Well, you're back.
嗨，你回来了
4) You need not bother about coming up .
你不必麻烦前来。
5) You don't need to thank him.
你不必再谢他了。
6) You needn't explain any more.
你不必再解释了。
补充资料：那些
1.哪里。表示反诘。 2.哪里。何处。
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